Before you go down, the car some time this gives indications of wear, such as parts of a crank mechanism. Then we hear the characteristic noise because of large gaps between them. In connection with the wear of pistons, cylinders and rings, reducing the compression efficiency of the engine, and lost its power. Crushed thread fasteners, they are stretched, there is a thief on the surface of the combustion chamber, valves and piston head. All this is possible to prevent, if you carefully follow the work of the engine. With experience comes to driving and skill to distinguish between problems in advance. Summarizing a different experience, try to understand the system, signals failure, but be aware that not all engines are suitable for this system. This article will describe how the inspection of the engine noise and odor. To hear a knocking noise and to understand their causes, we use phonendoscope. The engine should be warmed to 80 degrees Celsius. Deaf loud knock at the bottom of the unit clearly heard the sudden change in speed of crankshaft, and said that in the connecting rod bearing clearance is increased. If knocking on piston pin, thus, increased the gap in the connecting rod bearings. Metal, the sharp sound of the piston ring from the top half of the cylinder, disappear when the ignition cylinder, an increase of the gap between the sleeve heads, connecting rods or piston holes and fingers. Drive belts are located in the front. If there audible hum or whistle may be faulty drive the camshaft, water pump or generator. When the whistle and hum transformed into shrieking, it may mean that the generator belt is slipping, frozen or jammed water pump, petered out in the lubrication of generator bearings or jammed. If the front of the noises are heard and the sound of the reasons may be as follows: diminished tightening bolts generator generator bearings are worn out faded fixing the generator pulley, a crankshaft or fan drive components are worn camshaft weakened the cooler, cover it or pulley may cover the timing belt worn bearings water pump on a small level of oil indicates a regular tapping in the engine, increasing at corners. The same noise could talk about a weakened attachment of the engine or its parts - the air filter or intake pipe exhaust system. When typing speed engine, enhanced sound - hence, worn out rocker, or bent rod tappets or valve clearances have increased, has failed valve or spring (in this case, the motor can troit), worn camshaft or lifters. That worn connecting rod bearing shell or root liners, telling us loud knock at idle and operating speed, occasionally, along with that, the oil pressure light flashes. Most unpleasant screeching, with engine revolutions, raising the tone signals a failure of the bearings of the generator or water pump bearings. Intake manifold air drain, or drain the carburetor air. Or the starter gear is not out of engagement with the flywheel ring gear. Designated air suction can be detected using a soap solution. To test it must be applied by brush on the questionable surface. The engine roars under load - this may mean wear of main bearings. If the flywheel blabbed, gear change is clanking sound of metal in the engine. When broken mounting hole or worn pulley keyway, also can be heard rumbling. Metal detonating detonation, when the car is moving with acceleration or going uphill, talk about the explosive unmanaged burning fuel - air mixtures in engines. And this can happen because of the failure of the vacuum interrupter corrector-distributor, custom candles, low-octane gasoline, or improper adjustment of ignition timing. If you resolve these problems, the noise of detonation continues, the engine needs an overhaul. Not to be confused with the clapping sounds of detonation pistons when you start the engine cold. They are not harmful, but if heard in the heated state can be a gap between the cylinders and pistons. The engine in poor condition - it is desirable to include in the repairs. Reason knock and rumble when you start the engine when cold can be a slow growth of oil pressure. Either the oil pump is worn or defective root liners, or safety valve, or the oil level is low. Odors The same thing happens when casting the wrong type of oil, or incorrectly matched filter oil. If the car salon settled an odd odor, it can also be a signal of various problems. The smell of burnt rags, rather, stems from the fact that it is not omitted the hand brake, or late, pressed the clutch, brake or wedge. If acid leaking from the battery that is cracked or crowded in the cabin there is a smell acid. But, more often, the cabin smells like gasoline. This is - causes loss of cover from the tank, or it is full, or flows. Also - with the gasoline pump, benzoprovodom possibly petrol leaking through the drainage hole. May be damaged needle valve carburetor. If there is a smell of oil - perhaps the broken valve cover gasket, and maybe lost cap oil - filler, or the crankcase ventilation system jammed. When the engine is old and worn, it begins to smoke, and then there is the smell of oil, and you can see the oil increased oil consumption. Pilot Light deserves special attention indicator light oil pressure. If the engine is not flooded with oil or erroneous its quantity, the bulb is lit continuously, and did not go out. If there are no lights on the circuit a lot, we must pay attention to the oil pump, and then check the root liners. Flashing lights on the corners, more precisely, a wink means or low oil level, or what wire pressure sensor on mass periodically closes.
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